var Ex = function(o) {
	for (var k in o) this[k] = o[k];
	return this
}
var UI = function(id) {
	return document.getElementById(id)
}
var UIs = function(tag) {
	return Ex.call([], this.getElementsByTagName(tag))
}
var Each = function(a, fn) {
	for (var i = 0; i < a.length; i++) fn.call(a[i], i, a)
}
var dhooo = function(ini) {
	this.bind(ini, this);
	this.autoIndex = 0;
};
Ex.call(dhooo.prototype, {
	bind: function(ini, me) {
		var dir = ini.dir == 'top' ? 'scrollTop': 'scrollLeft',
		pan = UI(ini.contentID);
		var start = function(o) {
			Each(ini.btns,
			function() {
				this.className = ''
			});
			o.className = ini.className;
			me.autoIndex = o.index;
			me.begin(o.index, pan, ini.len, dir);
		};
		pan.onmouseover = function() {
			me.stop = true
		};
		Each(ini.btns,
		function(i) {
			this.index = i;
			this.onmouseover = function() {
				me.stop = true;
				start(this)
			};
			pan.onmouseout = this.onmouseout = function() {
				me.stop = false
			}
		});
		var auto = function() {
			if (!me.stop) {
				//me.autoIndex=me.autoIndex==4?0:++me.autoIndex;  --更改播放器 播放数量的限制    sunwentao
				me.autoIndex = me.autoIndex == (ini.btns.length - 1) ? 0 : ++me.autoIndex;
				start(ini.btns[me.autoIndex]);
			}
		};
		if (ini.auto) this.autoPlay = window.setInterval(auto, 7000);
	},
	begin: function(i, o, len, dir) { (function(me) {
			clearInterval(me.only);
			me.only = setInterval(function() {
				var diff = (i * len - o[dir]) * 0.1;
				o[dir] += Math[diff > 0 ? 'ceil': 'floor'](diff);
				if (diff == 0) clearInterval(me.only);
			},
			10);
		})(this);
	}
});